Disappearing-anchor lock



April 14, 1925.

- 1,533,629 F. E. BEST r DISAPPEARING ANCHOR LOCK 'Filed'auns 28, 192s 11,111 vara' -uarlla". a," l

/VENTR.

Patented Apr. 14, 19125.

UNITED STATES 1,533,629I ra'rnsrrN orrics.

FRANK ELLISON BEST, OF SEATTLE, EVASl-IINGTON, .ASSIGNOR TO FRANKE. BEST, INC., OF SEATTLE, WASHINGTON, A CRPORATION F WASHINGTON.

DISAPPEARING-ANCHOR LOCK.

Application ledJune 28,

T 0 all @1J/10m t may concern.:

Be it known that I, FRANK ELLIS/0N Bnsr, a citizen of the United States, residing at Seattle, in the county of King and State of Vashington, have invented a new and useful Disappcariiig-Anchor Lock, of which the following is a speciiication.

My invention relates to improvements in looks of the movable bolt disappearing anchor type and an object of my improve* ment is to provide a look ot this class having a bolt that isl arranged to be projected. outwardly from, and withdrawn into a look housing and having anchor members that are arranged to be proj ected outwardly from the sides of the bolt when the bolt is out oi the lock and withdrawn into the bolt as said bolt is retracted or withdrawn into the lock housing. j

Other objects are to provide a lock of this class that is strong, simple and compact in construction, reliable and eilicient in operation, and not expensive to manufacture.

A further object is to provide a look ot this nature that is especially adapted for use in connection with pin tumbler locking mechanism and that is constructed so that the several parts are readily detachable to facilitate the insertion and securing of the lock in a mortise.

Other and more speciiic objects will be apparent from the following description taken in connection with the accompanying drawings.

In the drawings Figure 1 is a view partly in elevation and partly in section, on an enlarged scale, of an anchor lock constructed in accordance with my invention, the bolt and anchor parts beingshown in an extendlock housing being omitted.' l

Fig. 2 is a sectional view of the same substantially on a broken line 2,-2 of Fig. 1, parts being shown in elevation.

Fig. 3 is a sectional View on line 3 3 of Fig. 2 showing the bolt `and anchor parts retracted into an opposite position from that shown in Fig. 1.

Fig. Ll, is view in cross section through lock housing substantially on broken line 4t-l of Fig. 2.

Referring to the drawings, throughout which like reference numerals designate like parts, 5 designates a relatively thin snbstan` tiallyrectangular housing having,"v its front 1923, Serial No. 648,303.

' end rigidly secured,'as by rivets 6, to a face plate?- of larger dimensions than the front end of the housing. The front end of `the housing 5 is open and registers with an opening" 8, in the tace plate, through which a bolt member is arranged to protrude, said bolt member preferably being constructed of' a pieceot" sheet metal bent channel shape to torni two spaced apart sides 9l and 10 that are connected attheir outer end by an end piece 11. The inner end ot the side plate 9 is bent outwardly as at 13, Fig. 2, to `form a stop. j

Mounted between the two sides 9and 10 ot vthe bolt member on `pivots 14 aretwo anchor members ot substantially bell crank shape, each comprising a hook portion 15, a

longer arm 16 extending between the pivot and the hook portion and a shorter arm 17 of substantially disc shape projecting inwardly from the pivot member. The shorter rounded arms 17 are arranged to fit within arcuate recesses 18 in the sides of the head portion 19 of a throw member said head portion 19 having a rounded upper `end 2O that is arranged to lit the inner curved edges 21 of the anchor members.v The recesses 1S are deep enough to alllord clearance for the rounded arms 17 in moving between the extreme positions shown in Fig. land Fig. 3. The outer extremities of the anchormembers that operate in close proximity to the wall 11 are preferably rounded as shown..

The head portion 19 ot the throw member is rigidly connected with a plate 22 that fits ywithin the housing o and is provided with a Jfshaped slot 23 of a form more speciiically described in my ,co-pending application Serial Number 650,635 Atiled July 10, 1923. ed or locked position and the pin tumbler j The edges21i of the plate 22 are bent at right angles to the fremainder of the plate .to form guides that slide within the housing 5. Y

The housing 5 is provided on one side with anA opening 25 over which a lockcase 26 iis arranged to be secured as by screws 27T that extend through the lock case` and screw into nut members 28 in the inside of said case, the head portions of the screws being set down into the. lock oase so that they are inaccessible 'when the lock is assembled.

The lock case 4is provided with an internal rrecess of figure 8 cross sectional shape that is counter bored at its outer end. and

" that is adapted for thev reception or` a.

los

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lock core 29, also of `gure 8 cross scctional'shap'e, having at its outer end a tace plate that lits into the counterbore on the endet the lock case. The inner end et the lock core Q9 'projects into the housing 5 thereby `facilitating the use ot a core ot maX- imum length in the least possible space and making possible the use ot a greater number' ot tumbler pins in a thinn'iortise lock than would otherwise be possible.

The lock core 29is`provided with arotatable key plug 31 having a key. slot tor the reception ot a key ot the usual :torni and having a throw member on its inner end that carries an eccentrically arranged pin 3Q that projects into the vJ shaped slot Q8 in the plate 22. A stop member 33 on `the throw member 32 is arranged to engage with a lug 34 on the plate to serve a stop when the several vparts have been moved into atully locked position.

The core 29 is arranged to be remombly secured within the lock case 26 by a gate element 35 in the core which is arranged to project into a recess 3G in the case 26. Disposed within the core 29 and Ykey plug 31 are a plurality of sectionaltumbler pins 3T arranged to be moved by the 'insertion of keys so that` breaks in the pins will register either with'the shear line at the periphery ot the key plug 31 to permit rotation ot such key plug or with the shear line atthe outer periphery otthe gate 35 toperinitk retraction ot said gate before removing` the core. The operation ot thejgate 35V is usuallycontrolled by a separate and 'distinct key so that persons having keys tor operatingthe lock will not, ordinarilybe able.. to remove the lock core.

\ In operation .the key plug 3l is arranged to be rotated through an angle of'. three hundred sixty degrees and to be locked only inthe position inl which the throw pin 32 `on the end of the key plug is at the uppermost limit o' its movement.` then the bolt and anchor y members are retracted the throw pinBQ, will be in the shorter end ot the Jshaped slot. 23 as shown in Fig. 3. To throw such bolt and anchor members outwardly the key plug is rotated through a complete revolution in a counter-clockwise direction into the postion shown in Fig. 1, in which position its movement is arrestedby engagement ot stop 33 withstop 34.

To retract from the position shown in Fig. 1` the key plug is rotated in a clockwisekdirection, the longer end oit the J shaped slot, permitting the pin 32to pass through its maximum position to one side ot the center ot the key plug and continue throughout one complete revolution. The bolt and anchor members are securely locked in both the eX- tended and retractedy positions.

-VVhen-the several parts are in the retract- 'ed position shownV in 3 the bolt'niember willbe flush with the upper sui-tace ot the plate 7 and the anchor members will be withdrawn into the bolt.

It' the 'key plug 31 is then turned to ,litt the throw memberfQQthe bolt will tirst be moved outwardly untilthe points ot the anchor members' clear the edges ot' the plate 38 into which they lock and the anchor members will thenV be moved outwardly and hook overthe edges ot the plate 38. In retracting the bolt and anchor members the [irst movement ot the throw member 2Q 'will withdraw 'the .anchors trom engagement with' the plate 38 and further movement will withdraw the .bolt into the housing 5.

The provision ofthe ylock controlled re? movable core makes it possibleto assemble this lock in a mortise ina relatively thin door or rail, the screws 27 securing the lock case 26 to the housing 'and being accessible only when the core `is removed. Allowing the core'29to protrude into the housing 5 makes it possible to provide an additional tumbler pin in the lock without materially increasing the thickness ofthe same thereby affording greater' security.

' The foregoing description and accompanying drawings clearly disclose what I now consider to be a pret'erred embodiment of the invention and, it will be understood that this disclosure is merely illustrative and that-such changes may be made as are within the scope Aand spirit ot the 'following claims: y

IVhat/I claim and desire to protect by Letters Patent is:

1. In a lock o t the class described, a bolt, a lpairot 'anchor members pivotally connected withthe bolt, a throw member operatively connected with said anchor members and' key controlled means for moving said throw member .and locking said anchor members and said bolt cooperatively.

2. In a lock. of the class described, a bolt, a pair ot anchor members pivoted in said bolt, a throw member connected with said anchor members for moving said anchor members and said bolt co-operatively, said throw member liaving'a cam slot, and lock means including alkey controlledrotatable key plug having'a pin engageable in said cam` slot tor' moving said throw member.

3. In a lockotthe character described, 'a bolt, a pairof anchor members pivoted to saidY bolt,'al throw'member for operating said anchor members andzsaid bolt, and key controlled means for moving said throw member thereby actuating said bolt and serving tofreleasably retainthe anchor members in their adjusted positions.

4. Ina lock of the character described, a bolt, a pair ot anchor members mounted within saidbolttand co-actingtherewith. a throw melllberand'rkey lcontrolled* means for 'operatin g'V tlae anchor members an dvv the 'bolt Cil and locking the same in both their engaged and disengaged. positions.

5. A lock ofthe class described embodying a housing, a bolt movable int-o and out of said housing, two anchor members pivotally mounted in said bolt and arranged to be withdrawn into or projected outwardly from opposite sides of said bolt, a throw member engagingsaid anchor members for moving said anchor members and said bolt, and key operated lock mechanism for moving said throw member.

6. A lock of the class described embodyingr a housing, a bolt movable into and out of said housing, two bell crank shaped anchor members pivoted within said bolt, each of said anchor members having a hook portion arranged to project outwardly from the sides of said bolt and a shorter `rounded arm portion arranged to project inwardly from the pivotal portion of the anchor member, a throw member having recesses for the reception oit the short-er rounded arm portions of said anchor members and key operated lock mechanism for moving said throw member. Y

7. In a lock of the class described, the combination with. a housing, of a lock case removably secured thereto, a bolt in said housing, a pair ot anchor members pivotod in said bolt, a throw member guided for reciprocatory movement in said housing and connected with said anchor members for operating said anchor members and said bolt,

a lock core removably locked within said lock case, and key controlled means in said lock core for operating said throw member.

8,. In a lock of the class described, a bolt, a pair of anchor members pivoted in said bolt` a throw member connected with said anchor members for moving said anchor members and said bolt, said throw member having a J shaped cam slot therein, and lor-k mechanism including` a pin movable in an arc throughout a complete circle and operable in said J shaped cam slot for actuating said throw member.

FRANK ELLIsoN BEST. 

